EP0363617B1 - Bohrvorrichtung zur Herstellung von Bohrlöchern mit Hinterschneidung - Google Patents

Bohrvorrichtung zur Herstellung von Bohrlöchern mit Hinterschneidung Download PDF

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Publication number
EP0363617B1
EP0363617B1 EP89115757A EP89115757A EP0363617B1 EP 0363617 B1 EP0363617 B1 EP 0363617B1 EP 89115757 A EP89115757 A EP 89115757A EP 89115757 A EP89115757 A EP 89115757A EP 0363617 B1 EP0363617 B1 EP 0363617B1
Authority
EP
European Patent Office
Prior art keywords
drill
drill bit
drilling device
suction
drilling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89115757A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0363617A1 (de
Inventor
Artur Prof. Dr. H. C. Fischer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fischerwerke Artur Fischer GmbH and Co KG
Original Assignee
Fischerwerke Artur Fischer GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE3835025A external-priority patent/DE3835025A1/de
Application filed by Fischerwerke Artur Fischer GmbH and Co KG filed Critical Fischerwerke Artur Fischer GmbH and Co KG
Priority to AT89115757T priority Critical patent/ATE78747T1/de
Publication of EP0363617A1 publication Critical patent/EP0363617A1/de
Application granted granted Critical
Publication of EP0363617B1 publication Critical patent/EP0363617B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/0009—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
    • B23Q1/0018—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means
    • B23Q1/0027—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means between moving parts between which an uninterrupted energy-transfer connection is maintained
    • B23Q1/0036—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means between moving parts between which an uninterrupted energy-transfer connection is maintained one of those parts being a tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/0018—Drills for enlarging a hole
    • B23B51/0027—Drills for enlarging a hole by tool swivelling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/0046—Devices for removing chips by sucking

Definitions

  • the invention relates to a drilling device for producing boreholes with an undercut according to the preamble of claim 1.
  • a drilling device of the type mentioned in which a drill can be screwed into a drill receptacle.
  • a suction bell is provided in the area of the drill receptacle, which encloses the drill receptacle and the drill shaft.
  • the suction bell is connected to a suction blower of a drilling machine or the like via a suction hose.
  • the purpose of the suction device is that the drilling dust accumulating in the borehole is sucked off during the drilling process.
  • the drill shaft is guided with lateral play in a suction sleeve, so that the drill can be pivoted within the suction sleeve.
  • the pivoting movement can create a borehole extension at the bottom of the borehole, which is usually referred to as an undercut.
  • Metallic expansion anchors can be used in a borehole with an undercut, which expand in the area of the undercut and can therefore be anchored in the borehole with a positive fit.
  • the pivoting movement of the drill must be limited. This can be achieved in that the drill has an enlarged cross section approximately in the middle of the drill shaft, which serves as a pivot bearing which is supported on the borehole wall.
  • the enlargement of the cross section makes it difficult to extract the drilling dust, since in the area of the enlargement of the cross section there is at most only a small gap left for suction.
  • a drilling device for producing boreholes with an undercut is also known from DE-A-2 349 998.
  • the from this document known drill on a collar as a cross-sectional extension, which forms a pivot bearing in the borehole or at the mouth of the borehole.
  • this drilling device does not have any precautions to suck off the drilling dust which arises during the drilling and undercutting of the borehole.
  • FR-A-902 101 also discloses a drill with a cross-sectional widening in the central region of the drill shaft.
  • the cross-sectional widening known from this publication does not serve to form a pivot bearing in order to enable an undercut to be rubbed out.
  • the enlargement of the drill shaft results in only a step drill, which drives part of the cylindrical drill hole to a larger diameter.
  • a suction drill is known from DE-A-2 948 682, which has an axial through-bore extending from the drill head. This through hole opens into the suction chamber of a suction bell, so that the drilling dust generated during drilling can be extracted by means of a suction pump.
  • this drilling device is only suitable for the production of cylindrical boreholes.
  • the invention is based on the object of providing a drilling device for producing boreholes with an undercut with a suction device which is simple in construction and enables suction of the drill bit from the drill tip.
  • the axial through-hole originating from the drill head enables suctioning directly at the drill tip, the notches provided in the area of the cross-sectional widening of the drill allowing the extracted air quantity to flow in again.
  • the notches also have the advantage that the drill shaft cannot get stuck in the borehole.
  • the drill often jams, as test bores have shown.
  • the cross-sectional expansion in the central area of the drill shaft forms in cooperation with the borehole wall, a swivel bearing which, after completion of the cylindrical part of the borehole, enables the drill to be pivoted out until the tapering borehole surfaces abut the borehole wall.
  • the drill In the swung-out state of the drill shaft, the drill is tumbled several times around the central axis, so that the undercut is rubbed out in the borehole depth with the side cutting edges of the drill plate.
  • the drill is preferably screwed into the drill receptacle by means of a threaded section, which forms a suction space and is enclosed by a tubular suction bell.
  • the suction bell preferably consists of a tube section with a laterally projecting suction nozzle, to which a suction hose of a suction pump can be connected in a manner known per se.
  • the tube section of the suction bell is held between two flanges in a very simple manner, one flange being formed on the drill receptacle and the other flange on the drill shaft.
  • the flange formed on the drill shaft also serves as a depth stop, which determines the maximum drill hole depth.
  • the approximately 1 to 2 cm long notches formed on the drill shaft preferably have a slope such that they convey the drilling dust accumulating in this area towards the drill head.
  • the slope of the notches can alternately be opposite or uniform as with drilling dust grooves, provided that this appears to be suitable for special applications.
  • the notches serve both as supply air ducts and for the further transport of the drilling dust generated in this area.
  • the drill plate can be optimally stored in the drill head, it is advantageous to guide the through hole laterally past the drill plate.
  • the drill plate can thus be inserted into a groove made in the solid part of the drill head.
  • the drilling device shown in FIG. 1 consists of a drill receptacle 1, a drill 2 and a suction bell 3.
  • the drill receptacle 1 has a fastening shaft 4 with which it can be clamped in a drill chuck or the like of a drilling machine. Furthermore, the drill receptacle 1 has a suction chamber 5, onto which the drilling bell 3 can be pushed from below. An opening 6 connects the suction chamber 5 to the interior 7 of the suction bell 3.
  • the drill 2 can be screwed into the internal thread 9 with a threaded section 10. Before this, however, the suction bell 3 is pushed over the suction space 5.
  • a flange 11 formed on the drill receptacle 1 and one on the drill 2 trained flange 12 close the suction bell 3 on both ends.
  • the drill 2 has a smooth shaft 13, which is provided with notches 14 distributed around the circumference.
  • the notches 14 are located in the area of the largest shank cross section and serve as outer air channels and as friction elements which prevent the drill from jamming in the borehole.
  • the notches 14 could also be arranged at an acute angle to the longitudinal axis and have an incline which corresponds to the incline of drilling dust grooves.
  • the grooves 14 can, however, also be provided with a slope which transports the drilling dust occurring in this area in the direction of the drilling head 15.
  • the drill 2 has an axial through hole 16, which is shown in the drawing with broken lines.
  • the through hole 16 has its smallest diameter in the area of the drill head 15 and the adjoining smallest shaft diameter. In the area of the enlarged shaft cross-section, the through bore 16 is also formed with a larger diameter, as a result of which a considerable improvement in the extraction of drilling dust is achieved.
  • the suction chamber 5 has a further enlarged diameter and is open to the suction bell 3 via large openings 6. This results in a flow cross-section which increases continuously from the tip of the drill head and which favors optimal suction of the drilling dust for the suction device.
  • the suction bell 3 has a laterally projecting suction nozzle 17 to which a suction hose (not shown here) of a suction pump can be connected in a manner known per se.
  • the cutting edges 18, 19 of the drilling plate 20 projecting laterally on the drilling head 15 serve to produce the undercut in a borehole.
  • the maximum drill head diameter is thus determined by the side cutting edges 18, 19 and is only slightly larger than the maximum cross-sectional expansion in the region 21 of the drill shaft.
  • the cross-sectional expansion of the drill shaft serves as a pivot bearing, which allows the drill head to be pivoted out in a defined manner 15 at the bottom of the borehole.
  • the expanded area 21 lies against the borehole wall.
  • FIG. 3 shows the drill 2 in the area of the drill head 15.
  • the through bore 16 forks and leads to suction openings 22 which are formed on both sides of the drill plate 20 on the end face of the drill head 15.
  • straight channels 23 can be formed within the drill head 15, which converge in the drill shaft.
  • the drill head 15 is widened conically, but there is also the possibility to design the drill head as a straight shaft part as shown in Figure 1. With a conically widened drill head, however, there is the possibility of providing larger suction openings 22 than with a drill head with a smaller diameter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Earth Drilling (AREA)
EP89115757A 1988-10-14 1989-08-26 Bohrvorrichtung zur Herstellung von Bohrlöchern mit Hinterschneidung Expired - Lifetime EP0363617B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89115757T ATE78747T1 (de) 1988-10-14 1989-08-26 Bohrvorrichtung zur herstellung von bohrloechern mit hinterschneidung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3835025 1988-10-14
DE3835025A DE3835025A1 (de) 1988-10-14 1988-10-14 Bohrvorrichtung zur herstellung von bohrloechern mit hinterschneidung
DE3903369A DE3903369A1 (de) 1988-10-14 1989-02-04 Bohrvorrichtung zur herstellung von bohrloechern mit hinterschneidung
DE3903369 1989-02-04

Publications (2)

Publication Number Publication Date
EP0363617A1 EP0363617A1 (de) 1990-04-18
EP0363617B1 true EP0363617B1 (de) 1992-07-29

Family

ID=25873239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115757A Expired - Lifetime EP0363617B1 (de) 1988-10-14 1989-08-26 Bohrvorrichtung zur Herstellung von Bohrlöchern mit Hinterschneidung

Country Status (19)

Country Link
EP (1) EP0363617B1 (pl)
JP (1) JPH0686052B2 (pl)
KR (1) KR900006050A (pl)
CN (1) CN1019774B (pl)
AU (1) AU599862B2 (pl)
BR (1) BR8905212A (pl)
CA (1) CA2000054C (pl)
CS (1) CS277058B6 (pl)
DE (2) DE3903369A1 (pl)
DK (1) DK497689A (pl)
ES (1) ES2034536T3 (pl)
FI (1) FI894582A (pl)
GR (1) GR3005312T3 (pl)
HU (1) HU206651B (pl)
NO (1) NO894100L (pl)
PL (1) PL162191B1 (pl)
PT (1) PT91970B (pl)
RU (1) RU1829988C (pl)
YU (1) YU198789A (pl)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4014224A1 (de) * 1990-05-04 1991-11-07 Fischer Artur Werke Gmbh Vorrichtung zur herstellung von bohrloechern mit hinterschneidung
DE4132228A1 (de) * 1991-09-27 1993-04-01 Fischer Artur Werke Gmbh Bohrvorrichtung zur herstellung von bohrloechern mit hinterschneidung
JP2009012084A (ja) 2007-06-29 2009-01-22 Okuma Corp 切削加工方法
CN104439397B (zh) * 2014-11-13 2017-03-29 贵州凯星液力传动机械有限公司 一种高精度深孔复合钻的加工方法
DE102017125898A1 (de) * 2017-11-06 2019-05-09 Drebo Werkzeugfabrik Gmbh Gesteinsbohranordnung sowie Gesteinsbohrer
CN109719559B (zh) * 2019-01-29 2024-03-19 华工法利莱切焊系统工程有限公司 钻孔铁屑收集系统以及钢板加工中心设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR902101A (fr) * 1943-09-29 1945-08-20 Schneider & Cie Outil combiné pour le percage des métaux
DE1203660B (de) * 1963-06-15 1965-10-21 Duss Maschf Staubabdichtung an einer Vorrichtung zum Absaugen des Bohrkleins fuer ein Bohrwerkzeug zur Steinbearbeitung
DE2349998C2 (de) * 1973-10-05 1982-12-02 Artur Dr.H.C. 7244 Waldachtal Fischer Bohreinheit zur Herstellung einer Hinterschneidung im Bohrloch
DE2948682A1 (de) * 1979-12-04 1981-06-11 Friedrich Duss Maschinenfabrik GmbH & Co, 7265 Neubulach Von hand fuehrbares bohr- oder schlagbohrgeraet mit absaugvorrichtung
DE3332806A1 (de) * 1983-09-12 1985-03-28 Artur Dr.H.C. 7244 Waldachtal Fischer Bohrvorrichtung zur herstellung von bohrloechern mit hinterschneidung
DE3335074A1 (de) * 1983-09-28 1985-04-11 Heinrich 6102 Pfungstadt Liebig Hinterschnitt-bohrwerkzeug

Also Published As

Publication number Publication date
JPH02150308A (ja) 1990-06-08
KR900006050A (ko) 1990-05-07
RU1829988C (ru) 1993-07-23
CN1041906A (zh) 1990-05-09
PT91970B (pt) 1995-08-09
CA2000054C (en) 1994-07-12
CA2000054A1 (en) 1990-04-14
DE3903369A1 (de) 1990-08-09
FI894582A (fi) 1990-04-15
DK497689D0 (da) 1989-10-09
JPH0686052B2 (ja) 1994-11-02
AU599862B2 (en) 1990-07-26
ES2034536T3 (es) 1993-04-01
HU206651B (en) 1992-12-28
PL162191B1 (pl) 1993-09-30
DE58901943D1 (de) 1992-09-03
CN1019774B (zh) 1992-12-30
CS579989A3 (en) 1992-06-17
AU4166489A (en) 1990-04-26
FI894582A0 (fi) 1989-09-27
PT91970A (pt) 1990-04-30
DK497689A (da) 1990-04-15
GR3005312T3 (pl) 1993-05-24
CS277058B6 (en) 1992-11-18
EP0363617A1 (de) 1990-04-18
BR8905212A (pt) 1990-05-15
NO894100L (no) 1990-04-17
YU198789A (en) 1991-06-30
HU895257D0 (en) 1990-01-28
NO894100D0 (no) 1989-10-13
HUT54554A (en) 1991-03-28

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